Warren, APA-53, was a Sumter-class attack transport named for Joseph Warren, the Revolutionary War patriot. Gulf Shipbuilding at Chickasaw, Alabama, laid her down on 19 April 1942 as the C2 merchant ship Jean Lafitte. She was launched on 7 September 1942, renamed Warren and classified AP-98, and became APA-53 on 1 February 1943. She was commissioned in ordinary on 19 February 1943, decommissioned on 10 March 1943 for conversion at Baltimore, and recommissioned on 2 August 1943, Commander William A. McHale, USNR, in command. Her Maritime Commission hull number is given as 475 by Wikipedia and 415 by NavSource.
She sailed from San Diego on 13 January 1944 with the 1st Battalion, 25th Marines, 4th Marine Division, and arrived off the northern islets of Kwajalein at dawn on 31 January. Her Marines took two small islands south of Roi and Namur, nicknamed Ivan and Jacob, to secure a passage into the lagoon and artillery positions. They met minor opposition and light casualties. She entered the lagoon on 1 February and stayed with her division for five days, and left on 4 February. Her commanding officer later wrote that on leaving the islands they knew now the horror of war.
She landed troops of the 3rd Marine Division at Guam on 20 July 1944 after standing by in reserve off Saipan. Her beach party was pinned down ashore for five days, and her hospital corpsmen and boat crews took wounded Marines off under mortar fire. She landed the 1st Marine Division's 1st Marines at Peleliu on 15 September 1944.
She was decommissioned on 14 March 1946 and struck on 17 April 1946, and was returned to the Maritime Commission on 1 August 1946. She went into merchant service, was sold for scrapping on 8 September 1977, and was scrapped at Brownsville, Texas. She earned five battle stars.